Objectives

Vocabulary

Example 1

Quick Quiz

• To determine a unit rate

• To use rates, proportions, or equations to convert currency rates

• To use rates to determine unit prices

• unit rate

SHOPPING A 12-oz bottle of cleaner costs $4.50. A 16-oz bottle of cleaner costs $6.56. Which costs less per ounce?

Find and compare the unit rates of the bottles.

For the 12-oz bottle, the unit rate is $0.38 per ounce.

÷12

÷12

Divide the numerator and denominator by 12 to get a denominator of 1.

Divide the numerator and denominator by 16 to get a denominator of 1.

For the 16-oz bottle, the unit rate is $0.41 per ounce.

Answer: The 12-oz bottle has the lower cost per ounce.

÷16

÷16

1. A

2. B

3. C

4. D0% 0%0%0%

A. The 12-pack costs less per can.

B. The 6-pack costs less per can.

C. Both packs cost the same per can.

D. cannot be determined from the given information

SHOPPING A 6-pack of a soft drink costs $1.50. A 12-pack of a soft drink costs $2.76. Which pack costs less per can?

1. A

2. B

3. C

4. D0% 0%0%0%

A store is selling a 3-pound bag of apples for $1.49. What is the cost per pound of apples?

A. $4.47 per pound

B. $0.46 per pound

C. $1.49 per pound

D. $0.50 per pound

1. A

2. B

3. C

4. D0% 0%0%0%

Store A sells a 4-pack of AA size batteries for $3.79. Store B sells a 6-pack of AA size batteries for $4.19. What is the price per battery at Store A?

A. about $0.70 per battery

B. about $1.05 per battery

C. about $0.95 per battery

D. about $0.63 per battery

1. A

2. B

3. C

4. D0% 0%0%0%

Jaxon is going to Belgium for spring break. He wants to convert $250 to euros. If the conversion rate is 1 euro = $1.59, how many euros will Jaxon have?

A. 397.50 euros

B. 157.23 euros

C. 159 euros

D. 0.64 euros

Image Bank

Math Tools

Multilingual e-Glossary

Using a Percent Model

Solving Proportions

Similar Triangles